The hard magnet can usually be felt inside the soft rubbery gasket material when squished between thumb and forefinger. (The section that makes contact with the door.)murphysf said:that being said how can I confirm that there is a magnet in the area of concern.
A dime might work if it's steel, a paper clip, a metal washer or just about anything steel and not so heavy that it would fall off. It's only a minimal magnet force. Just touch it to the flat part of the gasket to see if it sticks.What is a good item to use?